Hand Held Products IT4600, IT4X80 Encoded Message, Error Correction/Error Correction Characters

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Encoded Message

Encoded Message

The encoded message is the information (alpha, numeric, and/or control char- acters) or message contained within the bar code symbol and output as part of the decoding process. This information precedes the calculated PQA parame- ters. This information must be manually compared to the characters that should be encoded.

Error Correction/Error Correction Characters

Error Correction is a reader/decoder’s use of mathematical processes to recon- struct or replace damaged or missing symbol characters. Error correction char- acters are specific symbol characters that are created automatically from the other symbol data characters and used for error correction and detection.

Error Correction Level (ECL)

Error Correction Level is an indication of the number of characters used in a symbology for the purpose of error correction. Higher levels of error correction allow for correcting greater potential symbol damage.

Error Detection/Error Detection Characters

Error Detection is the use of error correction characters (symbol characters that are reserved for error detection and calculated automatically from the other symbol characters) to detect whether the presence of errors in the symbol exceeds the error correction capacity. Error detection will keep the symbol from being decoded as erroneous data.

Mask Pattern/Masking

Mask Pattern/Masking is a specific part or characteristic of QR Code where a process is used to provide a more evenly balanced number of light and dark modules to reduce the occurrence of arrangements of adjoining modules that might interfere with efficient processing of a symbol's image. For additional information, refer to the QR Code symbology, available from AIM Global Speci- fication (www.aimglobal.org).

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Contents User’s Guide Quick Check 2D Print Quality AssessmentDisclaimer Chapter 1 - Introduction Table of ContentsSymbology Chapter 2 - Quick*ViewChapter 3 - Customer Support X-dimensionUser Operation IntroductionReading Techniques Symbology/Parameter Specifics Full Report 2D PQA ReportingScreening Report A Data Safety Margin = 100% 0 Erasures & 0 Errors Identifying Symbol ContentThis is a representative PDF417 symbol PQA from HHP PDF417 11 rows x 3 cols, 25 data & 8 chks ECL = 2 X roughly =PDF417 2D Stacked / Multi-rowExcessive Print Shrinkage -43% of where In Screening modes, this parameter is reported as Useful Row Height is Too Short 1.5X when that is the case MicroPDF417 1 is the Encoded Message2D Matrix Aztec Code6 A Fixed Patterns 0 module errors Data Matrix1 This is a representative Data Matrix symbol 2 PQA from HHP 3 DATA MATRIX ECC200 24 x 24 modules in size7 A Data Safety Margin = 100% QR Code1 This is a representative QR Code symbol 2 PQA from HHP MaxiCode 4 lists this symbols Mask Pattern and Error Correction LevelPostal Height-Modulated Bar Code Symbologies Postnet and Planet Code7 A Ok Bar Widths = 0.022 in 8 A Ok Inter-Bar Gaps = 0.023 in 3 4-STATEBritish 34 Bars, nominally from 38.5 to 42.3 mm. in Width 4-State Codes1 B15AJ6T 2 PQA from HHP 4 Bar Sequence ADHTATDAHDDAADADAADTHTADHHDATHTADHAverage Bar Height/Extension Height Parameter InterpretationAverage Bar/Gap Width Table 1 Dimensional Tolerances for the Various 4-State BarCodeword Data and Check Data Safety MarginBar Sequence Codeword YieldError Detection/Error Detection Characters Error Correction/Error Correction CharactersError Correction Level ECL Encoded MessagePrint Growth Horizontal and Vertical Module ErrorsSymbology Row HeightX-dimension Quick*View Installing Quick*View from the WebSetting Up the Imager and the Quick*View Software Quick*View Demonstration Software InstructionsIT4600/4800/4X80 Temporary Quick*View ConfigurationIT4410/4710 Using the Quick*View Software If Communication Cannot Be EstablishedScan Data Window North America Obtaining Factory ServiceCustomer Support Latin AmericaNorth America/Canada Technical AssistanceAsia Page QC2DPQA-UG Rev B